LED street lighting market potential is gradually released. compare with led panel light. According to statistics, in 2011, the domestic LED road lighting (including LED street and tunnel lights) output value of 35 billion yuan, the total output of 910,000. Street light output value of 2.9 billion yuan, the production of 680,000, the installed capacity of 530,000. LED tunnel light output value of 500 million yuan, and the production of 230,000, the installed capacity of 190,000. Market participants predict, LED street lamps in 2012 the output value is expected to account for 50% of the entire street market, the advance of urbanization will further stimulate the demand for LED street lighting.
Energy-efficient at the same time should also be more humane
Despite the energy-saving effect of LED street lighting has been recognized by the market, but also faced some criticism, including the lighting source is too bright, serious glare, the light is too intense glare. The end of 2011, the State General Administration of Quality Supervision, Inspection and Quarantine announced, road and street lighting quality passing rate was only 58.3%, LED road lighting overall quality of worrying.
To glare, for example, it will lead to eye fatigue, and produce discomfort. According to the researchers of the Philips Lighting, glare Vision unfit brightness distribution, or extreme brightness contrast exists in space or time, causing visual discomfort and reduce the visibility of objects visual conditions. For example, when a bright spot in the dark field, the human eye is difficult to adapt and focus, will produce glare, which will lead to eye fatigue and discomfort.
With the gradual promotion of LED road lighting LED street lamp enterprises have begun to increasingly focus on standard applications with optical quality and visual comfort lighting demand factors more humane. like as led panel downlight, How to overcome these shortcomings of LED lighting is particularly urgent.
Philips Lighting research on how to overcome glare display, the color temperature of the light has a significant impact on people perceived degree of glare. People's perception of the actual light output for the same, cause uncomfortable feeling of the low color temperature of the light ("warm white") is less than a high color temperature of the light ("cool white"). One possible reason is that people of color temperature and light has its own preferences, and preferences in low light "warm white" (such as dawn, night and dusk), under high illumination preferences "cool white" (that is, the other day time ), a further reason may be that humanity has always regarded the "warm" color dusk / dawn linked to "cold" colors associated with daylight.
The Philips research also found that other factors cause glare illumination reaching the eye. see more about led tube t8 led tube, Most lamps both of light on the road, but also a portion of the light beams and the edge of the road. A seemingly reasonable approach is to limit the beam spread of the range, the light emitted by the lamps only illuminate the road surface. It is widely believed that doing so can reduce glare and reduce energy consumption. However, studies have shown that this "excess" sprinkling roadside and eyes light but very useful: to illuminate the surrounding part of the environment, but also improves the human eye to adapt to brightness, helps the driver to adapt more quickly in front conditions, the result will be to increase the driving comfort.